Buprenorphine is a drug that treats opiate withdrawal. It's often combined with the drug naloxone (a combination that can be called Suboxone, Bunavail, or Zubsolv) to prevent relapse.
A form of buprenorphine called Probuphine can be implanted under the skin. It treats opiate dependence in people who have been taking a stable dose of oral buprenorphine and are no longer ridding their bodies of the drug they're being treated for. It provides a constant dose of buprenorphine for 6 months.